Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 1), (-1, 1, 1), (1, -1, 1), (1, 0, -1), (1, 1, 0)}.
A149494
Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 1), (-1, 1, 1), (1, -1, 1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =14a(4) =63a(5) =255a(6) =1208a(7) =5300a(8) =25641a(9) =117338a(10) =573977a(11) =2692760a(12) =13258820a(13) =63201086a(14) =312496952a(15) =1505774619a(16) =7466107255a(17) =36252353187a(18) =180100006382a(19) =879419719458
External references
- oeis: A149494